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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 19 Mar, 2004
Analysis Summary
----------------
BGP routing table entries examined: 135459
Prefixes after maximum aggregation: 82471
Unique aggregates announced to Internet: 65041
Total ASes present in the Internet Routing Table: 16883
Origin-only ASes present in the Internet Routing Table: 14636
Origin ASes announcing only one prefix: 6766
Transit ASes present in the Internet Routing Table: 2247
Transit-only ASes present in the Internet Routing Table: 77
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 31
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 16
Number of addresses announced to Internet: 1288633188
Equivalent to 76 /8s, 206 /16s and 251 /24s
Percentage of available address space announced: 34.8
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 58.2
Total number of prefixes smaller than registry allocations: 60551
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25375
Total APNIC prefixes after maximum aggregation: 13408
Prefixes being announced from the APNIC address blocks: 23725
Unique aggregates announced from the APNIC address blocks: 13554
APNIC Region origin ASes present in the Internet Routing Table: 2026
APNIC Region origin ASes announcing only one prefix: 602
APNIC Region transit ASes present in the Internet Routing Table: 321
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 138565504
Equivalent to 8 /8s, 66 /16s and 87 /24s
Percentage of available APNIC address space announced: 74.7
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 78395
Total ARIN prefixes after maximum aggregation: 48433
Prefixes being announced from the ARIN address blocks: 60702
Unique aggregates announced from the ARIN address blocks: 21185
ARIN Region origin ASes present in the Internet Routing Table: 9046
ARIN Region origin ASes announcing only one prefix: 3214
ARIN Region transit ASes present in the Internet Routing Table: 893
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 220613664
Equivalent to 13 /8s, 38 /16s and 76 /24s
Percentage of available ARIN address space announced: 73.1
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
25600 - 26591, 26624 - 27647, 29695 - 30719
31744 - 32767
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 24764
Total RIPE prefixes after maximum aggregation: 17737
Prefixes being announced from the RIPE address blocks: 21513
Unique aggregates announced from the RIPE address blocks: 13692
RIPE Region origin ASes present in the Internet Routing Table: 5274
RIPE Region origin ASes announcing only one prefix: 2824
RIPE Region transit ASes present in the Internet Routing Table: 916
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 157783552
Equivalent to 9 /8s, 103 /16s and 150 /24s
Percentage of available RIPE address space announced: 72.3
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599, 28672 - 29695
30720 - 31743
RIPE Address Blocks 62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5725
Total LACNIC prefixes after maximum aggregation: 2200
Prefixes being announced from the LACNIC address blocks: 5358
Unique aggregates announced from the LACNIC address blocks: 3330
LACNIC Region origin ASes present in the Internet Routing Table: 368
LACNIC Region origin ASes announcing only one prefix: 100
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14358784
Equivalent to 0 /8s, 219 /16s and 25 /24s
Percentage of available LACNIC address space announced: 42.8
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1198
Total AfriNIC prefixes after maximum aggregation: 693
Prefixes being announced from the AfriNIC address blocks: 750
Unique aggregates announced from the AfriNIC address blocks: 559
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 1835776
Equivalent to 0 /8s, 28 /16s and 3 /24s
Percentage of available AfriNIC address space announced: 10.9
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 884 1102 628 Telstra Pty Ltd
4134 663 2751 117 Data Communications Bureau
4766 447 2914 244 Korea Internet Exchange for "
9583 393 37 107 Satyam Infoway Ltd.,
4755 367 130 56 Videsh Sanchar Nigam Ltd. Aut
2907 360 1847 336 SINET Japan
9443 353 70 81 Primus Telecommunications
703 342 374 263 UUNET
17557 330 23 169 Pakistan Telecom
17676 299 4412 39 XTAGE CORPORATION
2764 297 274 241 connect.com.au pty ltd
7474 270 304 210 Optus Communications Pty Ltd
9942 250 72 142 COMindico Australia
9929 228 155 30 China Netcom Corp.
9800 212 347 55 CHINA UNICOM
9498 196 31 38 BHARTI BT INTERNET LTD.
4837 171 1571 102 chinanet IDC center beijing n
4780 168 193 26 Digital United Inc.
9304 164 157 20 Hutchison Telecom (HK)
7633 156 23 42 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1412 7211 988 AT&T
701 1327 8574 955 UUNET Technologies, Inc.
1239 956 3084 657 Sprint
3356 863 10957 680 Level 3 Communications, LLC
209 718 3502 507 Qwest
4323 696 559 198 Time Warner Communications, I
18566 691 192 8 Covad Communications
6197 683 458 270 BellSouth Network Solutions,
20115 624 350 328 Charter Communications
6198 548 354 196 BellSouth Network Solutions,
7843 536 596 115 Adelphia Corp.
852 514 1127 404 Telus Advanced Communications
7066 500 207 272 Virginia Polytechnic Institut
7132 476 7834 328 Southwestern Bell Internet Se
2386 431 579 230 AT&T Data Communications Serv
690 397 58 267 Merit Network
4355 395 323 101 EarthLink, Inc.
27364 388 28 23 Armstrong Cable Services
376 380 343 112 Reseau Interordinateurs Scien
22909 373 831 26 Comcast Cable Corporation
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 673 2039 562 UUNET - Commercial IP service
3301 339 1178 318 TeliaNet Sweden
3320 288 2477 236 Deutsche Telekom AG
8220 264 410 251 COLT Internet - International
680 242 2027 238 DFN-IP service G-WiN
1257 237 510 196 SWIPnet Swedish IP Network
719 233 288 105 LANLINK autonomous system
13083 216 51 8 Mannesmann Datenverarbeitung
3246 194 451 192 Song Networks
786 175 1826 175 The JANET IP Service
8708 172 111 162 Romania Data Systems S.A.
5515 167 762 134 Sonera Solution Autonomous Sy
1273 165 172 100 Cable & Wireless Deutschland
25186 165 186 107 France Telecom Transpac's Tra
3215 164 800 79 France Telecom Transpac
5400 151 223 134 BT Ignite European Backbone
3303 137 620 137 Swisscom Ltd
6746 135 27 113 Dynamic Network Technologies,
3269 127 1069 64 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 378 123 65 ImpSat
8151 261 384 127 UniNet S.A. de C.V.
11172 207 75 43 Servicios Alestra S.A de C.V
16814 156 11 6 NSS, S.A.
6503 143 221 98 AVANTEL, S.A.
7303 136 51 31 Telecom Argentina Stet-France
6147 132 78 20 Telefonica Del Peru
6505 132 90 92 Global One Communicaoes Ltda
11992 100 9 28 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
15311 77 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
11311 70 7 17 Sinectis S.A.
14535 69 6 5 Techtel S.A.
14420 65 4 24 ANDINATEL S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
7738 63 234 14 Telecomunicacoes da Bahia S.A
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 251 632 218 The Internet Solution
5536 104 7 12 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
9129 25 3 4 UUNET Kenya
16637 25 9 18 Johnnic e-Ventures
12455 24 4 2 Jambonet Autonomous system
5713 23 77 21 Telkom SA Ltd
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
8524 22 2 4 AUCEGYPT Autonomous System
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
15706 16 2 3 Sudatel Internet Exchange Aut
15808 16 1 7 Communication Solutions Ltd i
15825 16 1 9 Network Computer Systems Auto
12258 15 3 10 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 691 683 Covad Communications
4134 663 546 Data Communications Bureau
4323 696 498 Time Warner Communications, I
7843 536 421 Adelphia Corp.
6197 683 413 BellSouth Network Solutions,
701 1327 372 UUNET Technologies, Inc.
27364 388 365 Armstrong Cable Services
6198 548 352 BellSouth Network Solutions,
22909 373 347 Comcast Cable Corporation
5668 353 338 Century Telephone
22773 352 314 Cox Communications, Inc. Atla
6140 378 313 ImpSat
4755 367 311 Videsh Sanchar Nigam Ltd. Aut
1239 956 299 Sprint
20115 624 296 Charter Communications
4355 395 294 EarthLink, Inc.
6347 371 289 SAVVIS Communications Corpora
9583 393 286 Satyam Infoway Ltd.,
9443 353 272 Primus Telecommunications
376 380 268 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
29975 UNALLOCATED 196.46.160.0/20 3741 The Internet Solutio
64541 PRIVATE 209.120.215.0/24 22551 Anobi Technology Cor
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
164.234.0.0/18 721 DLA Systems Automation Center
164.234.0.0/16 721 DLA Systems Automation Center
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:3 /10:6 /11:15 /12:57
/13:107 /14:292 /15:508 /16:7631 /17:1946 /18:3517
/19:9097 /20:9535 /21:6943 /22:9769 /23:11273 /24:73980
/25:199 /26:306 /27:161 /28:31 /29:8 /30:41
/31:0 /32:14
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 674 691 Covad Communications
6197 523 683 BellSouth Network Solutions,
7018 505 1412 AT&T
3356 472 863 Level 3 Communications, LLC
702 409 673 UUNET - Commercial IP service
6198 396 548 BellSouth Network Solutions,
7066 395 500 Virginia Polytechnic Institut
27364 381 388 Armstrong Cable Services
20115 376 624 Charter Communications
701 362 1327 UUNET Technologies, Inc.
690 360 397 Merit Network
1239 351 956 Sprint
5668 312 353 Century Telephone
4766 269 447 Korea Internet Exchange for "
25844 244 244 Skadden, Arps, Slate, Meagher
19029 241 371 New Edge Networks
9583 240 393 Satyam Infoway Ltd.,
3320 235 288 Deutsche Telekom AG
14824 232 257 NewSouth Communications Corp.
6517 231 253 Yipes Communications, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:812 13:1 15:4 16:1 17:3
20:6 24:830 32:83 38:53 40:56 44:3
55:1 56:1 57:13 61:382 62:490 63:1829
64:1887 65:1941 66:2414 67:284 68:576 69:448
80:481 81:271 82:130 83:10 128:142 129:258
130:73 131:78 132:16 134:178 135:16 136:185
137:107 138:152 139:43 140:148 141:146 142:109
143:49 144:71 145:37 146:298 147:76 148:369
149:85 150:97 151:62 152:216 153:60 154:1
155:123 156:61 157:57 158:147 159:143 160:51
161:55 162:376 163:80 164:321 165:164 166:111
167:210 168:210 169:99 170:301 171:8 192:5489
193:2642 194:2028 195:1347 196:528 198:3653 199:2964
200:3186 201:7 202:4503 203:5479 204:2973 205:1984
206:2243 207:2625 208:2371 209:2905 210:1185 211:507
212:923 213:1105 214:26 215:26 216:3342 217:861
218:154 219:104 220:192 221:20 222:6
End of report
